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Series oil cylinder reversing control method and device and concrete pumping system

A technology of a reversing control device and a control method, which is applied in the field of control, can solve the problem that an oil cylinder cannot be reversed, and achieves the effects of enhancing reliability and improving service life.

Active Publication Date: 2014-02-12
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a simple and effective reversing control method, device and concrete pumping method for series oil cylinders, which can prevent oil cylinders from reversing due to abnormal volume of oil in the communication cavity or cause the phenomenon of cylinder holding when reversing. system

Method used

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  • Series oil cylinder reversing control method and device and concrete pumping system
  • Series oil cylinder reversing control method and device and concrete pumping system
  • Series oil cylinder reversing control method and device and concrete pumping system

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Embodiment Construction

[0029] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0030] As a first aspect of the present invention, please refer to Figure 2 to Figure 5 , provides a method for controlling the reversing of oil cylinders connected in series, and more particularly relates to a method for controlling the reversing of pumping cylinders of piston concrete pumps.

[0031] The reversing control method includes: obtaining the position signal of the first piston 2 of the first oil cylinder 1; obtaining the position signal of the second piston 6 of the second oil cylinder 5; when the first piston 2 reaches the first predetermined position 3 or the second predetermined position When any condition of position 4 or the second piston 6 reaching the third predetermined position 7 and the fourth predetermined position 8 is met, the reversing of the series oil cylinder is triggered.

[0032]Wh...

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Abstract

The invention provides a series oil cylinder reversing control method and device and a concrete pumping system. The reversing control method includes the steps that position signals of a first piston of a first oil cylinder are acquired; position signals of a second piston of a second oil cylinder are acquired; when the first piston reaches a first preset position or a second preset position or when the second piston reaches a third preset position or a fourth preset position, series oil cylinders are triggered to reverse. By the adoption of the reversing control device, under the condition that no external hydraulic system pipeline is arranged, the volume of oil liquid in a communicating cavity is adjusted through U-shaped pipes of an existing oil cylinder, normal reversing can be still conducted when the volume of the oil liquid is not normal, adjustment of the volume of the oil liquid in the communicating cavity continues to a next period for conduction, the phenomenon that the pistons impact on the front ends or the rear ends of the oil cylinders due to the fact that the volume of the oil liquid in the communicating cavity is not normal is avoided, the service life of the oil cylinders is prolonged, and reliability of the system is improved.

Description

technical field [0001] The invention relates to the field of control, and more specifically, relates to a reversing control method and device for serial oil cylinders and a concrete pumping system. Background technique [0002] When two oil cylinders are used to work in series, the rod chambers or rodless chambers of the two oil cylinders are generally connected through a hydraulic pipeline or a valve block. When the pressure oil of the hydraulic system enters the rod chamber or rodless chamber of one of the cylinders to drive it to retract or extend (this cylinder is the active cylinder of the series cylinder), then it passes through the connecting chamber (the rodless chamber is connected or the rodless chamber is connected). Cavity connected) oil drives another oil cylinder to extend or retract (this oil cylinder is the slave cylinder of the tandem cylinder), when one of the pistons reaches the reversing trigger position, the sensor sends a reversing signal to trigger the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/16F15B15/28
Inventor 李四中李仁玉万梁
Owner ZOOMLION HEAVY IND CO LTD
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